Getting a second dog as the first one ages
A young couple on our street have an elderly dog. The lady has noticed that when she brings her mother's dog over, the elderly dog seems more spry and youthful. (The older dog has trouble getting around but is not presently "dying".) They really would like to get a puppy to have now, knowing that in the near future they will probably lose their 14 year old dog. But she feels guilty and thinks that when the older dog realizes the puppy is staying that it will be upset and resent the puppy and that it might make the older dog despondent.
Now yes, of course, they will continue to give their elderly dog all the love and attention it has always gotten but then the puppy will of course get its share too.
What would you do? Wait till you have lost your elderly dog or go ahead and get a puppy now, in hopes that the elderly dog will enjoy the youthful companionship?